Everything people ask about Weledi

An academy based in Dar es Salaam, Tanzania, that teaches data science, data engineering, machine learning and the software around data. We teach through live courses, workshops and talks, with free quizzes, free course notes and a free mobile app for practice between sessions.

weledi.com is where you learn: see what is on, register, pay, join live sessions, take quizzes and download notes. welediapp.com is about Weledi: what we do, our impact, our courses and how to work with us.

Students, graduates and working people who want to analyse data, build with it or move into a data job, and organisations that want their teams to work better with data.

Dar es Salaam, Tanzania. In-person sessions happen at the venue shown on each course or event page, and online sessions are open to learners wherever they are.

Email info@weledi.com, or call or WhatsApp +255 754 503 886. You can also join our WhatsApp group from weledi.com/whatsapp for new dates and announcements, and follow us on Instagram at @welediapp.

Django Web Development, Flutter Mobile Development, Machine Learning, Payments Integration, Python Programming and R Programming. Each course has an outline of topics in the order we teach them; see Courses on this site.

No computer science degree is needed. Each course starts from the basics of its subject, beginning with setting up the tools. Machine Learning starts with Python for machine learning, so some Python helps.

Both. Each course and event page on weledi.com says whether it is online or where it meets. Online sessions are live, and the green Join button opens the session when it starts.

A course runs over several days; its page shows the dates and the daily times. Workshops and talks are single sessions.

A computer with an internet connection for most courses, and for online sessions a stable connection. The first topic of every course shows exactly what to install.

Live and hands-on, by people who use these tools at work: real examples, code you run yourself, notes for every topic, quizzes to practise, and an exam at the end of the course.

The notes for every topic are free at weledi.com/notes and in the app, so you can catch up, and you can ask us for help on WhatsApp.

Yes. Most of our team training is in person, at your office or a venue you choose, anywhere in Tanzania. We can also train online when a team is spread out.

Data analysis and reporting with Python or R, statistics for surveys, research and monitoring and evaluation, data engineering (databases, pipelines and data quality), machine learning, and building data tools with Django.

Yes. We build the examples and exercises around your sector and your data. Sensitive data can be anonymised or replaced with realistic samples.

From a one-day workshop to a programme over several days or weeks. We plan the length with you, based on your goals and your team's starting point.

Yes: a certificate of attendance, or a course certificate for those who pass an exam. Every certificate has a number anyone can check at weledi.com/verify. Participants also keep free access to our quizzes and notes.

Email info@weledi.com or WhatsApp +255 754 503 886 with your team size, what you want them to be able to do, and when. We reply with a plan.

Single live sessions with practitioners on tools, careers and real projects in data science and data engineering, online or in person.

Many are. Each workshop page on weledi.com shows whether it is free or its price before you sign up.

Talks and workshops can give a certificate of attendance to the people who took part.

Yes. We co-host workshops and talks with organisations, universities and communities. Email info@weledi.com.

On weledi.com, with mobile money (a prompt comes to your phone and you confirm with your PIN) or with a bank card.

Payments go through a licensed payment provider. Your mobile money PIN is entered on your own phone, and card details are entered on the provider's secure page: Weledi never sees or stores your card number.

Yes. Every payment has a receipt under Payments in your profile on weledi.com, with a statement you can download, and every receipt can be checked.

Email info@weledi.com with your receipt and the date of payment. Eligible refunds are reviewed and processed within 5 working days; eligibility depends on whether the course or event has already started.

No. The app is free and shows no prices; paying happens only on weledi.com.

Finish the course and pass its exam on weledi.com. Your certificate is ready as soon as you pass.

Every certificate has a number. Anyone can type it at weledi.com/verify to see who earned it, for what and when.

Yes, as a PDF from Certificates in your profile on weledi.com.

Yes, always, for everyone, on weledi.com/quiz and in the app. Choose a topic and 5, 10 or 20 questions, with a minute for each.

Questions you got wrong come back until you get them right, then new questions come at your level, so every quiz is a little harder as you improve. You see the right answer straight away.

It runs weekly from Monday. A point is a different question you answered right, so repeating questions you already know adds nothing. On equal points, higher accuracy ranks first.

Yes. Every course's notes are free, topic by topic, at weledi.com/notes and in the app, and you can download them.

Yes, for Android on Google Play and for iPhone on the App Store, under Weledi Academy.

Take free quizzes, read and save every course's notes to use offline, and join the live sessions you have a place in with the Join button and a countdown.

Completely. It shows no prices and takes no payments.

Using data to answer questions and make decisions: collecting, cleaning, exploring and visualising data, using statistics, and building models that predict what will happen.

Building and running the systems that move, clean and store data so that analysts and models can trust it: databases, data pipelines, APIs and data quality checks.

Both start from the same base: a programming language such as Python or R, handling data, and databases. If you enjoy questions and statistics, lean to data science; if you enjoy building reliable systems, lean to data engineering. Many jobs need a bit of both.

Python if you want the widest choice of work (data analysis, machine learning, automation and web apps); R if your work is mostly statistics and research. Weledi teaches both.

Comfort with basic maths is enough to start. The statistics you need is taught inside the courses: R Programming has a statistics topic and Machine Learning starts with the mathematics and statistics essentials.

Data analyst, data scientist, data engineer, business intelligence analyst, machine learning engineer, research analyst, and monitoring and evaluation roles, in banks, telecoms, health, government, NGOs and start-ups.

We train your teams in person, co-host workshops and talks, and connect employers with our learners. Email info@weledi.com and tell us what you need.

Email info@weledi.com. Our impact numbers on this site are live from our platform.